Can someone me make sure if my answers is right.

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3